Although water was once considered an abundant if not unlimited resource; population growth, drought and shortages are straining our finite water supplies. Water quality and quantity concerns are the largest environmental issue facing the United States in the 21st century. Our engineers and scientists are helping utility managers around the nation find innovative ways to reuse water by reducing water loss at the plant, developing recycled water for irrigation; expanding the uses of high-pressure membranes; and developing satellite reuse facilities that create economies of scale.